Improvement in sewing-machines



L. LYON.

Sewing Machiner Patented Nov. 9, 1869.

UNITED STATES PATENT OFFICE.

LUOIUS LYON, OF NEW YORK, N. Y.

IMPROVEMENT IN SEWING-MACHINES.

Specification forming part of Letters Patent No. 96,713, dated November 9,1869.

To all whom it may concern.-

Be it known that I, LUCIUs LYON, of the city, county, and State of New York, haveinvented a new and useful Improvementin SewingMachines; and I do hereby declare the following to be a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference beinghad to the accompanyingdrawings,forming part of this specification, in which drawlugs- Figure 1 represents a sectional plan or top view of this invention. Fig. 2 is an inverted plan of the same. Fig. 3 is a transverse vertical section of the same.

Similar letters indicate corresponding parts.

Tnis invention consists in the arrangement of a ball-and-socket joint, to form the connect'on between the eccentric-rod and lever which actuate the shuttle of a sewing-machine, in such a manner that the lever is never bound in consequence of the varying position of the eccentric-rod, the joint always allowing the parts to accommodate themselves to the required changes of position of the lever and rod, and without allowing any dead-motion, and at the same time a shuttIe-mition is produced which works noiselessl y, or nearly noiselessly, even when driven at a very great velocity.

The letter A designates the table of a sewing-machine, and B the shaft from which the movements of the shuttle, the needle, and the feed are derived. The movements of the shuttle are effected by means of an eccentric, (J, upon the shaft B, upon which eccentric is mounted, in the ordinary way, one end of an eccentric-rod, D, whose other or outer end is provided with a socket, S, which receives a ball, Gr, formed on the extremity of the short arm of the shuttle-lever E, as is shown in the drawings. Theshuttle-lever E is pivoted at F to the under side of the table A, and its short and long arm form about a right angle with each other. The extremity of its long arm is connected, by means of a link, H, with the adjustable arm I of the vertical rock-shaft J, which passes upward through the table A into the center of the shuttle-race M,the shuttie-carrier R, which is made to oscillate back and forth in the race, being secured to the top of the rock-shaft by means of the clamping screw N, the top of-the rock-shaft being squared, and being fitted in an opening of like shape made in the arm of the shuttlecarrier, so that the carrier cannot shift on the shaft. The arm I is adjustably secured upon the under or lower end of the rock-shaft J by a setscrew, L, (see Fig. 2,) so that the rock-shaft J and the shuttle-carrier can be adjusted at pleasure to bring them into proper relations with the shuttle-lever E and its connections, and to time the movements of the shuttle-carrier with respect to the movements of the needle.

I do not confine myself to any particula mode of forming the universal-joint connection between the eccentric-rod and the shuttle-levcr; but the one here shown is considered by I me a satisfactory method of carrying out my invention, the eccentric-rod being allowed to turn on thejoint of the shuttle-lever freely. in every direction, and that noiselessiy, ornearly so, and the construction being simple and cheap. In this example of my invention I have formed the joint by makingsemicircnlar socket S in the rear side, at the outer end of the cocentric-rod, which socket receives the ball G, whose size is such that it can be freely turned in the socket. Through the center of the ball I pass a screw, 0, which goes through the bottom of the socket and enters the extremity of the short end of the shuttle-lever E, as is shown in Fig. 2.

I do not confine myself to an eccentric for giving motion from the shaft B to the rod D,

as I may, with good results, employ a cam forscribed.

LUOIUS. LYON. Witnesses O. WAHLERS, E. F. KASTENHUBER. 

